/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product45.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 20:04:15,276 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 20:04:15,279 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 20:04:15,303 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 20:04:15,303 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 20:04:15,304 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 20:04:15,306 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 20:04:15,307 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 20:04:15,309 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 20:04:15,310 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 20:04:15,311 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 20:04:15,312 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 20:04:15,312 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 20:04:15,313 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 20:04:15,314 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 20:04:15,315 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 20:04:15,316 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 20:04:15,317 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 20:04:15,318 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 20:04:15,320 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 20:04:15,322 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 20:04:15,326 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 20:04:15,329 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 20:04:15,330 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 20:04:15,332 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 20:04:15,332 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 20:04:15,335 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 20:04:15,337 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 20:04:15,337 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 20:04:15,340 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 20:04:15,340 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 20:04:15,341 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 20:04:15,341 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 20:04:15,342 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 20:04:15,344 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 20:04:15,344 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 20:04:15,345 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 20:04:15,345 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 20:04:15,345 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 20:04:15,347 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 20:04:15,348 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 20:04:15,349 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 20:04:15,398 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 20:04:15,399 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 20:04:15,400 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 20:04:15,400 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 20:04:15,400 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 20:04:15,405 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 20:04:15,405 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 20:04:15,405 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 20:04:15,405 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 20:04:15,406 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 20:04:15,406 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 20:04:15,406 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 20:04:15,406 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 20:04:15,406 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 20:04:15,407 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 20:04:15,407 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 20:04:15,407 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 20:04:15,407 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 20:04:15,407 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 20:04:15,408 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 20:04:15,408 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 20:04:15,408 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 20:04:15,409 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 20:04:15,409 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 20:04:15,409 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 20:04:15,409 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 20:04:15,410 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 20:04:15,410 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 20:04:15,410 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 20:04:15,410 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SHALLOWEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SHALLOWEST; [2020-08-18 20:04:15,724 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 20:04:15,736 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 20:04:15,739 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 20:04:15,741 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 20:04:15,743 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 20:04:15,745 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product45.cil.c [2020-08-18 20:04:15,803 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b31fb9bac/f38e0fd4dfcd4236898d5689dc35da2e/FLAG9253fc290 [2020-08-18 20:04:16,266 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 20:04:16,266 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product45.cil.c [2020-08-18 20:04:16,280 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b31fb9bac/f38e0fd4dfcd4236898d5689dc35da2e/FLAG9253fc290 [2020-08-18 20:04:16,639 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b31fb9bac/f38e0fd4dfcd4236898d5689dc35da2e [2020-08-18 20:04:16,647 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 20:04:16,648 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 20:04:16,649 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 20:04:16,650 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 20:04:16,653 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 20:04:16,655 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 08:04:16" (1/1) ... [2020-08-18 20:04:16,658 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a47163c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:04:16, skipping insertion in model container [2020-08-18 20:04:16,658 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 08:04:16" (1/1) ... [2020-08-18 20:04:16,667 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 20:04:16,735 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 20:04:17,271 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 20:04:17,285 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 20:04:17,368 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 20:04:17,406 INFO L208 MainTranslator]: Completed translation [2020-08-18 20:04:17,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:04:17 WrapperNode [2020-08-18 20:04:17,407 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 20:04:17,408 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 20:04:17,408 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 20:04:17,408 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 20:04:17,423 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:04:17" (1/1) ... [2020-08-18 20:04:17,423 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:04:17" (1/1) ... [2020-08-18 20:04:17,444 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:04:17" (1/1) ... [2020-08-18 20:04:17,445 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:04:17" (1/1) ... [2020-08-18 20:04:17,502 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:04:17" (1/1) ... [2020-08-18 20:04:17,519 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:04:17" (1/1) ... [2020-08-18 20:04:17,530 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:04:17" (1/1) ... [2020-08-18 20:04:17,545 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 20:04:17,545 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 20:04:17,546 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 20:04:17,546 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 20:04:17,547 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:04:17" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 20:04:17,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 20:04:17,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 20:04:17,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 20:04:17,632 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 20:04:17,632 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 20:04:17,632 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 20:04:17,632 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 20:04:17,632 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 20:04:17,633 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 20:04:17,633 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 20:04:17,633 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 20:04:17,633 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-18 20:04:17,633 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 20:04:17,633 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 20:04:17,634 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 20:04:17,634 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 20:04:17,634 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 20:04:17,634 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 20:04:17,634 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 20:04:17,634 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 20:04:17,635 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 20:04:17,635 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 20:04:17,635 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 20:04:17,635 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 20:04:17,635 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 20:04:17,636 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 20:04:17,636 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 20:04:17,636 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 20:04:17,636 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 20:04:17,636 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 20:04:17,636 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-18 20:04:17,637 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 20:04:17,637 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-18 20:04:17,637 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 20:04:17,637 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 20:04:17,637 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 20:04:17,637 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 20:04:17,638 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 20:04:17,638 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 20:04:17,638 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 20:04:17,638 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 20:04:17,638 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 20:04:17,638 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 20:04:17,639 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 20:04:17,639 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 20:04:17,639 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 20:04:17,639 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 20:04:17,639 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 20:04:17,639 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 20:04:17,639 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 20:04:17,640 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 20:04:17,640 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 20:04:17,640 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-18 20:04:17,640 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 20:04:17,640 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 20:04:17,640 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 20:04:17,641 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 20:04:17,641 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 20:04:17,641 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 20:04:17,641 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 20:04:17,641 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 20:04:17,641 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 20:04:17,642 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 20:04:17,642 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 20:04:17,642 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 20:04:17,642 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 20:04:17,642 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 20:04:17,642 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 20:04:17,643 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 20:04:17,643 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 20:04:17,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 20:04:17,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 20:04:17,643 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 20:04:17,643 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 20:04:17,643 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 20:04:17,644 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 20:04:17,644 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 20:04:17,644 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 20:04:17,644 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 20:04:17,644 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 20:04:17,644 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 20:04:17,645 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 20:04:17,645 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 20:04:17,645 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 20:04:17,645 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 20:04:17,645 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 20:04:17,645 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-18 20:04:17,646 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 20:04:17,646 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-18 20:04:17,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 20:04:17,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 20:04:17,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 20:04:18,928 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 20:04:18,928 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 20:04:18,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 08:04:18 BoogieIcfgContainer [2020-08-18 20:04:18,938 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 20:04:18,942 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 20:04:18,942 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 20:04:18,946 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 20:04:18,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 08:04:16" (1/3) ... [2020-08-18 20:04:18,948 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7af01698 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 08:04:18, skipping insertion in model container [2020-08-18 20:04:18,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:04:17" (2/3) ... [2020-08-18 20:04:18,949 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7af01698 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 08:04:18, skipping insertion in model container [2020-08-18 20:04:18,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 08:04:18" (3/3) ... [2020-08-18 20:04:18,951 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product45.cil.c [2020-08-18 20:04:18,963 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 20:04:18,974 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 20:04:18,990 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 20:04:19,020 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 20:04:19,021 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 20:04:19,021 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 20:04:19,021 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 20:04:19,022 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 20:04:19,022 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 20:04:19,022 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 20:04:19,022 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 20:04:19,050 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states. [2020-08-18 20:04:19,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-18 20:04:19,067 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:04:19,069 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:04:19,070 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:04:19,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:04:19,078 INFO L82 PathProgramCache]: Analyzing trace with hash 1763081390, now seen corresponding path program 1 times [2020-08-18 20:04:19,088 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:04:19,089 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [476166340] [2020-08-18 20:04:19,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:04:19,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:19,809 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:04:19,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:04:19,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:19,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:04:19,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:19,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:04:19,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:19,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:04:19,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:19,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:04:19,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:19,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 20:04:19,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:19,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 20:04:19,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:19,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:04:19,964 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [476166340] [2020-08-18 20:04:19,966 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:04:19,966 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 20:04:19,967 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978130092] [2020-08-18 20:04:19,973 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 20:04:19,973 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:04:19,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 20:04:19,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 20:04:19,991 INFO L87 Difference]: Start difference. First operand 173 states. Second operand 3 states. [2020-08-18 20:04:21,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:04:21,211 INFO L93 Difference]: Finished difference Result 303 states and 398 transitions. [2020-08-18 20:04:21,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 20:04:21,213 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-18 20:04:21,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:04:21,239 INFO L225 Difference]: With dead ends: 303 [2020-08-18 20:04:21,240 INFO L226 Difference]: Without dead ends: 164 [2020-08-18 20:04:21,248 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 20:04:21,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-08-18 20:04:21,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 130. [2020-08-18 20:04:21,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-08-18 20:04:21,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 154 transitions. [2020-08-18 20:04:21,369 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 154 transitions. Word has length 46 [2020-08-18 20:04:21,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:04:21,370 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 154 transitions. [2020-08-18 20:04:21,370 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 20:04:21,370 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 154 transitions. [2020-08-18 20:04:21,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-18 20:04:21,374 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:04:21,374 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:04:21,375 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 20:04:21,375 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:04:21,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:04:21,376 INFO L82 PathProgramCache]: Analyzing trace with hash 1948835968, now seen corresponding path program 1 times [2020-08-18 20:04:21,376 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:04:21,376 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [92686165] [2020-08-18 20:04:21,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:04:21,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:21,693 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:04:21,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:04:21,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:21,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:04:21,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:21,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:04:21,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:21,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:04:21,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:21,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:04:21,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:21,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 20:04:21,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:21,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 20:04:21,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:21,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:04:21,751 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [92686165] [2020-08-18 20:04:21,751 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:04:21,751 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 20:04:21,751 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111769914] [2020-08-18 20:04:21,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 20:04:21,753 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:04:21,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 20:04:21,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 20:04:21,754 INFO L87 Difference]: Start difference. First operand 130 states and 154 transitions. Second operand 4 states. [2020-08-18 20:04:22,203 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:04:23,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:04:23,092 INFO L93 Difference]: Finished difference Result 236 states and 289 transitions. [2020-08-18 20:04:23,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 20:04:23,093 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-18 20:04:23,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:04:23,096 INFO L225 Difference]: With dead ends: 236 [2020-08-18 20:04:23,096 INFO L226 Difference]: Without dead ends: 148 [2020-08-18 20:04:23,098 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 20:04:23,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-08-18 20:04:23,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 121. [2020-08-18 20:04:23,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-08-18 20:04:23,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 142 transitions. [2020-08-18 20:04:23,135 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 142 transitions. Word has length 47 [2020-08-18 20:04:23,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:04:23,136 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 142 transitions. [2020-08-18 20:04:23,136 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 20:04:23,136 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 142 transitions. [2020-08-18 20:04:23,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-18 20:04:23,138 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:04:23,138 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:04:23,139 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 20:04:23,139 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:04:23,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:04:23,139 INFO L82 PathProgramCache]: Analyzing trace with hash -970175768, now seen corresponding path program 1 times [2020-08-18 20:04:23,140 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:04:23,140 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [291833562] [2020-08-18 20:04:23,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:04:23,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:23,453 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:04:23,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:04:23,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:23,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:04:23,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:23,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:04:23,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:23,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:04:23,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:23,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:04:23,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:23,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 20:04:23,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:23,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 20:04:23,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:23,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:04:23,558 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [291833562] [2020-08-18 20:04:23,559 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:04:23,559 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 20:04:23,559 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146102475] [2020-08-18 20:04:23,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 20:04:23,563 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:04:23,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 20:04:23,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 20:04:23,564 INFO L87 Difference]: Start difference. First operand 121 states and 142 transitions. Second operand 8 states. [2020-08-18 20:04:23,930 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:04:24,230 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:04:24,469 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:04:24,716 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:04:25,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:04:25,944 INFO L93 Difference]: Finished difference Result 245 states and 303 transitions. [2020-08-18 20:04:25,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 20:04:25,944 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-18 20:04:25,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:04:25,948 INFO L225 Difference]: With dead ends: 245 [2020-08-18 20:04:25,948 INFO L226 Difference]: Without dead ends: 148 [2020-08-18 20:04:25,949 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-18 20:04:25,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-08-18 20:04:25,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 121. [2020-08-18 20:04:25,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-08-18 20:04:25,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 141 transitions. [2020-08-18 20:04:25,987 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 141 transitions. Word has length 51 [2020-08-18 20:04:25,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:04:25,987 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 141 transitions. [2020-08-18 20:04:25,987 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 20:04:25,988 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 141 transitions. [2020-08-18 20:04:25,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-18 20:04:25,990 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:04:25,990 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:04:25,990 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 20:04:25,991 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:04:25,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:04:25,991 INFO L82 PathProgramCache]: Analyzing trace with hash 137025886, now seen corresponding path program 1 times [2020-08-18 20:04:25,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:04:25,991 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1440290896] [2020-08-18 20:04:25,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:04:26,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:26,272 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:04:26,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:04:26,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:26,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:04:26,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:26,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:04:26,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:26,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:04:26,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:26,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:04:26,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:26,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 20:04:26,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:26,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:04:26,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:26,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:04:26,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:26,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 20:04:26,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:26,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 20:04:26,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:26,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:04:26,411 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1440290896] [2020-08-18 20:04:26,411 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:04:26,411 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 20:04:26,412 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451230598] [2020-08-18 20:04:26,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 20:04:26,413 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:04:26,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 20:04:26,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 20:04:26,414 INFO L87 Difference]: Start difference. First operand 121 states and 141 transitions. Second operand 6 states. [2020-08-18 20:04:26,720 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:04:27,773 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:04:28,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:04:28,504 INFO L93 Difference]: Finished difference Result 342 states and 424 transitions. [2020-08-18 20:04:28,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 20:04:28,505 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 64 [2020-08-18 20:04:28,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:04:28,509 INFO L225 Difference]: With dead ends: 342 [2020-08-18 20:04:28,510 INFO L226 Difference]: Without dead ends: 245 [2020-08-18 20:04:28,511 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-18 20:04:28,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2020-08-18 20:04:28,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 204. [2020-08-18 20:04:28,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2020-08-18 20:04:28,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 233 transitions. [2020-08-18 20:04:28,564 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 233 transitions. Word has length 64 [2020-08-18 20:04:28,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:04:28,565 INFO L479 AbstractCegarLoop]: Abstraction has 204 states and 233 transitions. [2020-08-18 20:04:28,565 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 20:04:28,565 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 233 transitions. [2020-08-18 20:04:28,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-18 20:04:28,567 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:04:28,567 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:04:28,567 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 20:04:28,567 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:04:28,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:04:28,568 INFO L82 PathProgramCache]: Analyzing trace with hash -274572639, now seen corresponding path program 1 times [2020-08-18 20:04:28,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:04:28,568 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1445711905] [2020-08-18 20:04:28,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:04:28,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:28,855 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:04:28,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:04:28,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:28,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:04:28,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:28,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:04:28,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:28,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:04:28,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:28,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:04:28,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:28,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 20:04:28,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:28,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:04:28,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:28,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:04:28,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:28,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:04:28,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:28,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:04:28,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:28,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-18 20:04:28,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:28,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 20:04:28,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:28,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:04:28,944 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1445711905] [2020-08-18 20:04:28,944 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:04:28,945 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 20:04:28,945 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488158905] [2020-08-18 20:04:28,945 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 20:04:28,946 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:04:28,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 20:04:28,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 20:04:28,946 INFO L87 Difference]: Start difference. First operand 204 states and 233 transitions. Second operand 8 states. [2020-08-18 20:04:29,302 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:04:30,254 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:04:30,577 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:04:31,142 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:04:31,384 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:04:31,653 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:04:32,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:04:32,570 INFO L93 Difference]: Finished difference Result 607 states and 749 transitions. [2020-08-18 20:04:32,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 20:04:32,571 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 78 [2020-08-18 20:04:32,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:04:32,575 INFO L225 Difference]: With dead ends: 607 [2020-08-18 20:04:32,575 INFO L226 Difference]: Without dead ends: 427 [2020-08-18 20:04:32,577 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-18 20:04:32,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2020-08-18 20:04:32,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 363. [2020-08-18 20:04:32,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2020-08-18 20:04:32,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 416 transitions. [2020-08-18 20:04:32,687 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 416 transitions. Word has length 78 [2020-08-18 20:04:32,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:04:32,688 INFO L479 AbstractCegarLoop]: Abstraction has 363 states and 416 transitions. [2020-08-18 20:04:32,688 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 20:04:32,688 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 416 transitions. [2020-08-18 20:04:32,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-08-18 20:04:32,690 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:04:32,690 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:04:32,690 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 20:04:32,691 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:04:32,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:04:32,691 INFO L82 PathProgramCache]: Analyzing trace with hash 1223934493, now seen corresponding path program 1 times [2020-08-18 20:04:32,691 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:04:32,692 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [163514534] [2020-08-18 20:04:32,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:04:32,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:32,980 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:04:32,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:04:32,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:33,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:04:33,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:33,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:04:33,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:33,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:04:33,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:33,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:04:33,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:33,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 20:04:33,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:33,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 20:04:33,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:33,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:04:33,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:33,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:04:33,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:33,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:04:33,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:33,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:04:33,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:33,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-18 20:04:33,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:33,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 20:04:33,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:33,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:04:33,099 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [163514534] [2020-08-18 20:04:33,099 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:04:33,099 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 20:04:33,100 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561768590] [2020-08-18 20:04:33,100 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 20:04:33,100 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:04:33,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 20:04:33,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 20:04:33,101 INFO L87 Difference]: Start difference. First operand 363 states and 416 transitions. Second operand 9 states. [2020-08-18 20:04:33,522 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:04:34,678 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:04:34,960 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:04:35,927 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:04:36,193 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:04:36,431 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:04:36,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:04:36,718 INFO L93 Difference]: Finished difference Result 466 states and 584 transitions. [2020-08-18 20:04:36,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 20:04:36,718 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 82 [2020-08-18 20:04:36,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:04:36,722 INFO L225 Difference]: With dead ends: 466 [2020-08-18 20:04:36,723 INFO L226 Difference]: Without dead ends: 463 [2020-08-18 20:04:36,723 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-18 20:04:36,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2020-08-18 20:04:36,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 363. [2020-08-18 20:04:36,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2020-08-18 20:04:36,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 415 transitions. [2020-08-18 20:04:36,791 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 415 transitions. Word has length 82 [2020-08-18 20:04:36,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:04:36,792 INFO L479 AbstractCegarLoop]: Abstraction has 363 states and 415 transitions. [2020-08-18 20:04:36,792 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 20:04:36,792 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 415 transitions. [2020-08-18 20:04:36,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-18 20:04:36,795 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:04:36,795 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:04:36,795 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 20:04:36,795 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:04:36,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:04:36,796 INFO L82 PathProgramCache]: Analyzing trace with hash -1913348729, now seen corresponding path program 1 times [2020-08-18 20:04:36,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:04:36,796 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [338045888] [2020-08-18 20:04:36,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:04:36,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:37,115 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:04:37,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:04:37,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:37,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:04:37,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:37,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:04:37,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:37,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:04:37,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:37,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:04:37,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:37,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 20:04:37,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:37,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 20:04:37,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:37,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:04:37,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:37,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:04:37,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:37,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:04:37,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:37,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:04:37,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:37,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:04:37,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:37,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:04:37,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:37,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:04:37,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:37,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-18 20:04:37,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:37,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-18 20:04:37,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:37,307 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 20:04:37,308 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [338045888] [2020-08-18 20:04:37,309 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:04:37,310 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 20:04:37,311 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266874673] [2020-08-18 20:04:37,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 20:04:37,312 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:04:37,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 20:04:37,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 20:04:37,316 INFO L87 Difference]: Start difference. First operand 363 states and 415 transitions. Second operand 9 states. [2020-08-18 20:04:38,282 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:04:38,535 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:04:38,777 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:04:39,012 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:04:40,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:04:40,032 INFO L93 Difference]: Finished difference Result 810 states and 1008 transitions. [2020-08-18 20:04:40,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 20:04:40,034 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 98 [2020-08-18 20:04:40,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:04:40,039 INFO L225 Difference]: With dead ends: 810 [2020-08-18 20:04:40,039 INFO L226 Difference]: Without dead ends: 471 [2020-08-18 20:04:40,042 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-18 20:04:40,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2020-08-18 20:04:40,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 373. [2020-08-18 20:04:40,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 373 states. [2020-08-18 20:04:40,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 425 transitions. [2020-08-18 20:04:40,145 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 425 transitions. Word has length 98 [2020-08-18 20:04:40,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:04:40,146 INFO L479 AbstractCegarLoop]: Abstraction has 373 states and 425 transitions. [2020-08-18 20:04:40,146 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 20:04:40,146 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 425 transitions. [2020-08-18 20:04:40,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-18 20:04:40,147 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:04:40,148 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:04:40,148 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 20:04:40,148 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:04:40,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:04:40,149 INFO L82 PathProgramCache]: Analyzing trace with hash -1019862391, now seen corresponding path program 1 times [2020-08-18 20:04:40,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:04:40,149 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1148009892] [2020-08-18 20:04:40,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:04:40,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:40,408 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:04:40,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:04:40,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:40,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:04:40,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:40,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:04:40,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:40,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:04:40,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:40,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:04:40,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:40,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 20:04:40,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:40,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 20:04:40,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:40,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:04:40,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:40,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:04:40,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:40,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:04:40,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:40,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:04:40,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:40,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:04:40,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:40,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:04:40,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:40,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:04:40,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:40,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-18 20:04:40,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:40,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-18 20:04:40,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:40,620 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 20:04:40,621 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1148009892] [2020-08-18 20:04:40,622 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:04:40,622 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 20:04:40,623 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108441266] [2020-08-18 20:04:40,624 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 20:04:40,624 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:04:40,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 20:04:40,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-18 20:04:40,625 INFO L87 Difference]: Start difference. First operand 373 states and 425 transitions. Second operand 11 states. [2020-08-18 20:04:41,195 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:04:41,416 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:04:41,637 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:04:42,198 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:04:42,441 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:04:42,677 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:04:43,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:04:43,797 INFO L93 Difference]: Finished difference Result 830 states and 1030 transitions. [2020-08-18 20:04:43,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 20:04:43,801 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 98 [2020-08-18 20:04:43,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:04:43,804 INFO L225 Difference]: With dead ends: 830 [2020-08-18 20:04:43,805 INFO L226 Difference]: Without dead ends: 481 [2020-08-18 20:04:43,806 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 20:04:43,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2020-08-18 20:04:43,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 381. [2020-08-18 20:04:43,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 381 states. [2020-08-18 20:04:43,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 433 transitions. [2020-08-18 20:04:43,885 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 433 transitions. Word has length 98 [2020-08-18 20:04:43,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:04:43,886 INFO L479 AbstractCegarLoop]: Abstraction has 381 states and 433 transitions. [2020-08-18 20:04:43,886 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 20:04:43,886 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 433 transitions. [2020-08-18 20:04:43,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-18 20:04:43,892 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:04:43,892 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:04:43,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 20:04:43,892 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:04:43,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:04:43,893 INFO L82 PathProgramCache]: Analyzing trace with hash -1027621750, now seen corresponding path program 1 times [2020-08-18 20:04:43,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:04:43,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1473792128] [2020-08-18 20:04:43,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:04:43,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:44,129 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:04:44,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:04:44,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:44,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:04:44,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:44,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:04:44,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:44,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:04:44,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:44,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:04:44,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:44,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 20:04:44,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:44,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 20:04:44,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:44,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:04:44,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:44,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:04:44,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:44,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:04:44,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:44,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:04:44,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:44,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:04:44,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:44,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:04:44,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:44,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:04:44,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:44,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-18 20:04:44,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:44,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-18 20:04:44,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:44,281 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 20:04:44,282 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1473792128] [2020-08-18 20:04:44,282 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:04:44,282 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 20:04:44,282 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097530615] [2020-08-18 20:04:44,283 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 20:04:44,283 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:04:44,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 20:04:44,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 20:04:44,284 INFO L87 Difference]: Start difference. First operand 381 states and 433 transitions. Second operand 7 states. [2020-08-18 20:04:44,787 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:04:45,309 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:04:47,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:04:47,261 INFO L93 Difference]: Finished difference Result 1133 states and 1452 transitions. [2020-08-18 20:04:47,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-18 20:04:47,262 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 98 [2020-08-18 20:04:47,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:04:47,268 INFO L225 Difference]: With dead ends: 1133 [2020-08-18 20:04:47,268 INFO L226 Difference]: Without dead ends: 776 [2020-08-18 20:04:47,270 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 39 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-18 20:04:47,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 776 states. [2020-08-18 20:04:47,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 776 to 677. [2020-08-18 20:04:47,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 677 states. [2020-08-18 20:04:47,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 803 transitions. [2020-08-18 20:04:47,403 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 803 transitions. Word has length 98 [2020-08-18 20:04:47,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:04:47,404 INFO L479 AbstractCegarLoop]: Abstraction has 677 states and 803 transitions. [2020-08-18 20:04:47,404 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 20:04:47,404 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 803 transitions. [2020-08-18 20:04:47,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-08-18 20:04:47,406 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:04:47,407 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:04:47,407 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 20:04:47,407 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:04:47,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:04:47,408 INFO L82 PathProgramCache]: Analyzing trace with hash 1865521988, now seen corresponding path program 1 times [2020-08-18 20:04:47,408 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:04:47,408 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1640653123] [2020-08-18 20:04:47,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:04:47,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:47,686 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:04:47,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:04:47,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:47,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:04:47,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:47,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:04:47,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:47,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:04:47,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:47,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:04:47,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:47,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 20:04:47,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:47,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 20:04:47,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:47,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 20:04:47,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:47,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:04:47,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:47,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:04:47,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:47,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:04:47,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:47,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:04:47,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:47,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:04:47,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:47,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:04:47,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:47,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:04:47,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:47,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 20:04:47,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:47,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-18 20:04:47,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:47,904 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-18 20:04:47,905 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1640653123] [2020-08-18 20:04:47,905 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 20:04:47,905 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-18 20:04:47,906 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036786398] [2020-08-18 20:04:47,906 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-18 20:04:47,906 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:04:47,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-18 20:04:47,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2020-08-18 20:04:47,907 INFO L87 Difference]: Start difference. First operand 677 states and 803 transitions. Second operand 17 states. [2020-08-18 20:04:48,590 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:04:48,940 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:04:49,222 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:04:49,476 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:04:50,030 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:04:50,915 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:04:51,207 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:04:51,466 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:04:51,732 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:04:52,028 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:04:52,284 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:04:52,838 WARN L193 SmtUtils]: Spent 422.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 188 [2020-08-18 20:04:53,370 WARN L193 SmtUtils]: Spent 426.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 188 [2020-08-18 20:04:55,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:04:55,208 INFO L93 Difference]: Finished difference Result 1398 states and 1726 transitions. [2020-08-18 20:04:55,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-18 20:04:55,208 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 102 [2020-08-18 20:04:55,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:04:55,215 INFO L225 Difference]: With dead ends: 1398 [2020-08-18 20:04:55,215 INFO L226 Difference]: Without dead ends: 745 [2020-08-18 20:04:55,219 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=304, Invalid=1256, Unknown=0, NotChecked=0, Total=1560 [2020-08-18 20:04:55,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 745 states. [2020-08-18 20:04:55,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 745 to 649. [2020-08-18 20:04:55,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2020-08-18 20:04:55,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 757 transitions. [2020-08-18 20:04:55,342 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 757 transitions. Word has length 102 [2020-08-18 20:04:55,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:04:55,342 INFO L479 AbstractCegarLoop]: Abstraction has 649 states and 757 transitions. [2020-08-18 20:04:55,342 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-18 20:04:55,342 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 757 transitions. [2020-08-18 20:04:55,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-08-18 20:04:55,345 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:04:55,346 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:04:55,346 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 20:04:55,346 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:04:55,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:04:55,347 INFO L82 PathProgramCache]: Analyzing trace with hash -1153565628, now seen corresponding path program 1 times [2020-08-18 20:04:55,347 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:04:55,347 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [115797394] [2020-08-18 20:04:55,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:04:55,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:55,644 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:04:55,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:04:55,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:55,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:04:55,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:55,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:04:55,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:55,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:04:55,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:55,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:04:55,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:55,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 20:04:55,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:55,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 20:04:55,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:55,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:04:55,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:55,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:04:55,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:55,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:04:55,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:55,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:04:55,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:55,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:04:55,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:55,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:04:55,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:55,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:04:55,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:55,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:04:55,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:55,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 20:04:55,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:55,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:04:55,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:55,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-18 20:04:55,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:55,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-08-18 20:04:55,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:55,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-08-18 20:04:55,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:55,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:04:55,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:55,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:04:55,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:55,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 20:04:55,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:55,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:04:55,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:55,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-18 20:04:55,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:55,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-18 20:04:55,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:55,984 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 19 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-08-18 20:04:55,985 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [115797394] [2020-08-18 20:04:55,985 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 20:04:55,986 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-08-18 20:04:55,986 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379943632] [2020-08-18 20:04:55,988 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-18 20:04:55,988 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:04:55,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-18 20:04:55,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2020-08-18 20:04:55,989 INFO L87 Difference]: Start difference. First operand 649 states and 757 transitions. Second operand 18 states. [2020-08-18 20:04:56,959 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:04:57,404 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:04:57,655 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:04:57,906 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:04:58,517 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:04:59,440 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:04:59,732 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:04:59,977 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:05:00,232 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:05:00,549 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:05:00,796 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:05:02,023 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:05:02,266 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:05:02,528 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:05:02,769 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:05:03,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:05:03,667 INFO L93 Difference]: Finished difference Result 1181 states and 1457 transitions. [2020-08-18 20:05:03,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-08-18 20:05:03,668 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 153 [2020-08-18 20:05:03,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:05:03,669 INFO L225 Difference]: With dead ends: 1181 [2020-08-18 20:05:03,669 INFO L226 Difference]: Without dead ends: 0 [2020-08-18 20:05:03,673 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 410 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=338, Invalid=1554, Unknown=0, NotChecked=0, Total=1892 [2020-08-18 20:05:03,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-18 20:05:03,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-18 20:05:03,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-18 20:05:03,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-18 20:05:03,675 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 153 [2020-08-18 20:05:03,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:05:03,675 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-18 20:05:03,675 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-18 20:05:03,675 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-18 20:05:03,675 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-18 20:05:03,675 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 20:05:03,678 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-18 20:05:06,507 WARN L193 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 294 DAG size of output: 242 [2020-08-18 20:05:08,361 WARN L193 SmtUtils]: Spent 502.00 ms on a formula simplification. DAG size of input: 294 DAG size of output: 242 [2020-08-18 20:05:09,170 WARN L193 SmtUtils]: Spent 466.00 ms on a formula simplification. DAG size of input: 296 DAG size of output: 244 [2020-08-18 20:05:09,962 WARN L193 SmtUtils]: Spent 650.00 ms on a formula simplification. DAG size of input: 294 DAG size of output: 242 [2020-08-18 20:05:10,836 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 18 [2020-08-18 20:05:11,521 WARN L193 SmtUtils]: Spent 679.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 16 [2020-08-18 20:05:11,693 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 1 [2020-08-18 20:05:11,875 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 22 [2020-08-18 20:05:12,089 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 22 [2020-08-18 20:05:12,256 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 1 [2020-08-18 20:05:12,457 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 1 [2020-08-18 20:05:12,634 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 24 [2020-08-18 20:05:12,815 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 24 [2020-08-18 20:05:13,024 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:05:13,205 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 1 [2020-08-18 20:05:13,729 WARN L193 SmtUtils]: Spent 518.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 20 [2020-08-18 20:05:13,915 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 1 [2020-08-18 20:05:14,420 WARN L193 SmtUtils]: Spent 500.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 19 [2020-08-18 20:05:14,591 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 1